Improvement in metallurgy furnaces



UNITED STATES PATENT OFFICE THEOPHILUS D. MORGAN, OF PITTSBURG, ASSIGNORTO HIMSELF, DAVID MORGAN, OF SAME PLAGE, AND HUGH MGDONALD, OFALLEGHENY,

PENNSYLVANIA.

IMPROVEMENT lN METALLURGIC FURNACES.

Specification forming part of Letters Patent No. 163,795, dated May 25,1.875; application filed March 8, 1875.

To allwhom it ,may concern:

Be it knownV that I, THEOPHILUS D. MOR- GAN, of Pittsburg, county ofAllegheny, State of Pennsylvania, have invented or discovered a new anduseful Improvement in Metallurgie Furnaces; and I do hereby declare thefollowing to be a full, clear, concise, and exact description thereof,reference being had to the accompanying drawing making a part of thisspecification, in which-like letters indicating like parts- Figure l isa longitudinal vertical section of my improved metallurgie furnace, asformed by a plane passing through m x, Fig. 2. Fig. 2 is longitudinalhorizontal sectional view, as formed by a plane along the line x Fig. l5 and Figs. 3, 4, and 5 are transverse vertical sectional views, asformed by planes passing along the line y y,y1yl, and y2 y2,respectively, of Fig. l.

At B I have shown the operating-chamber of a metallurgie furnace, which,so far the purposes of the present invention are concerned, may be ofany desired form or construction, with reference to its use in roasting,calciuin g, heating, reheating, melting, puddlin g, boiling, orotherwise treating metals, metallic alloys, or compounds by heat. At D Ihave shown the ordinary stack. The neck P of the furnace, intermediatebetween the flue-bridge b and the stack D, is preferably made a littlelonger than in the ordinary puddling-furnace say, from twelve to fteenfeet in length, more or less-though the length may be varied at pleasurewith reference to its heating capacity. The height of the flues inside Imake from two to three feet, and their width about six inches, more orless. This neck Pis divided into a series of lues, of which at leastone, a, leads from any suitable connection with a gas-generator,producer, orholder, at outside of, or near the stack, and opens, by adivin g-lue, c, into a chamber, e. Another nue, al, receivesatphospheric air at the stack end, and conducts such air along, and by adiving-flue, c', discharges it into the chamber c. Alternately arrangedwith the lues al al are the smoke-fines a2, leading to the stack. Theheated smoke or gases, or other products of combustion, passing backthrough the lines a2, will heat the'inclosing-walls so as thereby toheat the gas and air passing forward along the iiues a al. From thechamber c the gas passes along a iiue, or a'series of lu'es, s, underthe furnace bed or operating chamber B, where it is still furtherheated, and in like manner the air from the chamber c is conducted alonga like flue or series of hues, s', and is heated in like manner. At thefront or opposite end of the furnace are two up-takc fines, m a, eachextending across, or nearly across, the entire front end, and into one,n, the gas-lines s discharge, and into the other, m, the air-iiues sopen in like manner. The heated air passes up the up-take flue m, andthrough a series of ports, 11i, at or near the upper end of theseparating wall, intovthe upper part of the up-take iiue n, where itcomes in contact, and is intermingled with hea-ted gas arising in saidflue. The two intermiXed pass through a series of ports, o, in the upperpart of the bridge-wall, and being now heated to the point ofcombustion, ignite, and act in the operating-chamber B in the usualmanner.

Instead of the series of ports c' and o, a single broad opening at theupper end of each wall may be employed.

I do not limit myself to any particular number of iiues for each of thepurposes designated, as the number may be increased or diminishedwithout departing from the scope of my invention.

The furnace is to have the necessary charging and tapping holes or otherappliances, but which for clearness of illustration I have omitted inthe drawing.

The furnace described, besides embodying the elements of utilitycommonly belonging to furnaces of this class, is cheaply made, as thebuilding of the iiues requires only straight brick-work of the simplestkind.

What I claim as my invention, and desire to secure by Letters Patent,is-

1. rIlhe neck of the ordinary metallurgie furnace, divided intoalternately-arranged air, gas, and smoke lues a al a2, the air and gasiiues taking air and gas at the stack end of the neck, substantially asset forth.

2. The air and gas ues a al, arranged in the neck, alternately with thesmoke-nues, and taking air and gas at the stack end of the neck, incombination With the ues s s under the bed ofthe furnace, and Lip-takeues m n, with their discharge-ports alternately arranged, substantiallyas set forth.

3. A system of gas and air flues, co a] s s', in combination with the11p-take ues m n and operating-chamber B, whereby the air and gas areheated, mixed, and ignited, substantially in the manner and for thepurposes set forth.

In testimony whereof I have hereunto set my hand.

THEOPHILUS D. MORGAN.

Witnesses:

JAMES M. CHRISTY, GEORGE H. CHRISTY.

